Today's Message Index:
----------------------
1. 02:24 AM - Over- priming (Richard Goode)
2. 10:14 AM - Re: Over- priming (doug sapp)
3. 03:19 PM - Re: Over- priming (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
4. 06:06 PM - Re: Fly Away Covers that fit Yak 50,52 and CJ's (Harry Hirschman)
Message 1
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In my view ten blades are not enough - I would suggest at least fifteen.
The point of my method is that it prevents the need of getting in and
out of the aircraft, which one really does not want to do at the best of
times particularly if it is cold/raining.
So if the engine is in reasonable condition; the carburettor primed; 3/5
pumps to the cylinder, the engine should start within a revolution of
the prop on every occasion.
The big mistake is to treat the air start as a form of starter-motor.
The engine will either start, which is fine; kick-back, which means it
is over-primed; or not fire which means that it is under primed.
IF it does kick-back then switch everything off; and now you do need to
get out, and wind the prop through (say) six revolutions, and then start
again.
If it is under primed, then give it some more prime.
The essence of it is that everything can be done from inside the
cockpit.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340 120
Fax: +44 (0) 1544 340 129
www.russianaeros.com
Message 2
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| Subject: | Re: Over- priming |
All,During a conversation with the folks in China who are in the know with
respect to what is done to their engines at overhaul stated that it is the
top clys which are always in the poorest condition when they receive the
engines for overhaul. They confirmed that this was due to overpriming. All
food for thought.
Doug
On Tue, Sep 29, 2009 at 2:17 AM, Richard Goode <
richard.goode@russianaeros.com> wrote:
>
> In my view ten blades are not enough - I would suggest at least fifteen.
>
> The point of my method is that it prevents the need of getting in and out
> of the aircraft, which one really does not want to do at the best of times
> particularly if it is cold/raining.
>
> So if the engine is in reasonable condition; the carburettor primed; 3/5
> pumps to the cylinder, the engine should start within a revolution of the
> prop on *every* occasion.
>
> The big mistake is to treat the air start as a form of starter-motor.
>
> The engine will either start, which is fine; kick-back, which means it is
> over-primed; or not fire which means that it is under primed.
>
> IF it does kick-back then switch everything off; and now you do need to get
> out, and wind the prop through (say) six revolutions, and then start again.
>
> If it is under primed, then give it some more prime.
>
> The essence of it is that everything can be done from inside the cockpit.
>
>
> Richard Goode Aerobatics
> Rhodds Farm
> Lyonshall
> Herefordshire
> HR5 3LW
> United Kingdom
>
> Tel: +44 (0) 1544 340 120
> Fax: +44 (0) 1544 340 129
> www.russianaeros.com
>
> *
>
> *
>
>
--
Douglas Sapp
Doug Sapp LLC
18B Riverview Road
Omak WA 98841
PH 509-826-4610
Fax 509-826-3644
Message 3
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This may be a ridiculous statement, but it dawns on me that not all of
these engines sit at the same angle when mounted in the aircraft. For
example, the YAK-50 obviously sits canted back, while on the 52 it is
fairly level. Would this result in less fuel going down into the top
cylinder or not? Just wondering.
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of doug sapp
Sent: Tuesday, September 29, 2009 10:14
Subject: Re: Yak-List: Over- priming
All,
During a conversation with the folks in China who are in the know with
respect to what is done to their engines at overhaul stated that it is
the top clys which are always in the poorest condition when they receive
the engines for overhaul. They confirmed that this was due to
overpriming. All food for thought.
Doug
On Tue, Sep 29, 2009 at 2:17 AM, Richard Goode
<richard.goode@russianaeros.com> wrote:
In my view ten blades are not enough - I would suggest at least
fifteen.
The point of my method is that it prevents the need of getting
in and out of the aircraft, which one really does not want to do at the
best of times particularly if it is cold/raining.
So if the engine is in reasonable condition; the carburettor
primed; 3/5 pumps to the cylinder, the engine should start within a
revolution of the prop on every occasion.
The big mistake is to treat the air start as a form of
starter-motor.
The engine will either start, which is fine; kick-back, which
means it is over-primed; or not fire which means that it is under
primed.
IF it does kick-back then switch everything off; and now you do
need to get out, and wind the prop through (say) six revolutions, and
then start again.
If it is under primed, then give it some more prime.
The essence of it is that everything can be done from inside the
cockpit.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340 120
Fax: +44 (0) 1544 340 129
www.russianaeros.com
et="_blank">http://www.matronics.com/Navigator?Yak-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
--
Douglas Sapp
Doug Sapp LLC
18B Riverview Road
Omak WA 98841
PH 509-826-4610
Fax 509-826-3644
Message 4
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| Subject: | Re: Fly Away Covers that fit Yak 50,52 and CJ's |
I got one for my -50 and it's really nice to have on overnight cross countries.
It's light and compact enough to leave in the plane all the time (either in
the baggage compartment, if you have one, or attached behind the seat). It's
not intended for everyday use, but it's perfect for trips or when you get caught
away from the home hangar. Looks good on -52's and CJ's too.
Harry
----- Original Message ----
From: Roger Kemp M.D. <viperdoc@mindspring.com>
Sent: Thursday, September 24, 2009 7:58:58 PM
Subject: RE: Yak-List: Fly Away Covers that fit Yak 50,52 and CJ's
How much for the YAK 50 cover?
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Arthur white
Sent: Thursday, September 24, 2009 4:00 PM
Subject: RE: Yak-List: Fly Away Covers that fit Yak 50,52 and CJ's
Kregg
I have Yak 52 based in Europe.
How much are the covers?
Best regards
Arthur
-----Original Message-----
From: Kregg Victory <kregg@balancemyprop.com>
Sent: 24 September 2009 03:29
Subject: Yak-List: Fly Away Covers that fit Yak 50,52 and CJ's
I just got in new lightweight travel covers that will fit almost any
airplane. Weighs from 2-3.5 lbs and has a carry bag that is about 7"x24".
Sizes that Yak 50, 52 and CJ'S.
If interested contact me directly
[The entire original message is not included]
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